I finished this last night and truly enjoyed it. I'm sure of all the answers but have something like nine queries (just slow on the uptake surely). I too had trouble with 29a; the word occurred to me but I had never heard it used intransitively (at least not with that sense), and when I finally looked it up I saw that it didn't say "Brit." (though of course it wouldn't in Chambers, would it?). It was my last entry, and I'm still mulling over it. I've tried to channel ixion's sinister spirit, twisting my mind up and letting some darkness into it, but to no avail as yet.